Reversing mechanism



June 2, 1931. R. GATzScHE REVERSING- MECHANISM Filed April 5. 1929 mentor:

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- posed hollowed out inner surfaces of the frame.

serted in grooves in the rod a and the inserted.

Patented June 2, i931 PATENT orrics .moimnn enrzsonr or- BAD rmn mnnune, GERMANY 'nnvnasme mncnmxsm Application filed April 5, 1929, Serial No.

The invention relates to reversing mechanism comprising two movable control elements between which a resilient member is so arranged that at the movement of one of 5 the control elements the resilient member is carried along and tensioned, passes its dead position and thereby moves the other control element in the oppositedirection. The resilient member may be composed of differ ently shaped springs, and the spring is fitted in a frame which forms one control element, and when the dead position is passed is shifted in the one or other direction by the spring. At the same time the frame can slide on the control element which is moved or actuated. The shifting or actuation of one of the control elements can be effected directly by pressure or pulling, or by known means such as rotary handle, crank or the like U Two embodiments of the invention are llusof example in the accompanytrated by way in drawings in which I Fig. 1 shows a reversing mechanism directly operatable by pull or pressure,

Fig.2 shows a reversing mechanlsm operatable by turning. i p Fig. 3 is a detail of the mechanism 1llus-' trated in Fig. 2. a

Fig. 4 represents a form. of construction of the resilient member for actuating the reversing. v V

- -In Fig. 1 a is one ofthe moving control elements, and-b the other. The control element a is composed of a rod of any desired cross section, and the element consists of a rhomboidal frame. B'oth elements are arranged in a stationary housing a and guided parallel to each other. The rodshaped ele-' ment at projects from the housing and -1S provided with a knob d. The frame-shaped element 6 sits loosely on the rod-shaped ele- -ment (1. and is slidable thereon. serpentine spring e (see Fig. 4) is so fitted 1n the frame I) that it rests against one of the two op- The centre coil ofthe wring is in- -shanks of the spring are rotatable in the grooves. The outer coils of the springs are dash lines in Fig. 2.

352,734, al ld in Germany A ril- 12; 192s.

connected with the two-corners of the frame.

The rod a, on the inward movement, carries along the sprlng e by means of the centre COll. The instant the spring passes its dead centre position, it presses with its outer coils the frame into such a position, that the spring can assume theposition symmetrical to its nitial position as shown in dot-dash lines in Fig. 1. The greater the bend of the spring in the frame is, the-greater will be .thestroke of the control element. The two side walls of the frame bare symmetrical to the dead position of the spring. The frame can however bepartly. open as-shownin the drawings.

The arrangement shown'in Fig. 2 is similar to that shown in Fig. 1 only the shifting of the control rod a is effected by turning. The knob fhas in its bore acurved groove 9, which 1s shown developed in Fig. 3. In this groove 9 the knob f engages the head it of a screw passing through the control rod a. By turnmg the knob f the screw head it will be displaced in the groove 9 and thereby shifts the control rod a carrying the central coil of the spr ng 6'. When the spring has passed its dead position it throws the frame 6 into the opposite control position, as shown in dot- The frame, in which the spring member is housed, may be constructed in many various similar manners. The important feature of the invention is, the use of a frame or frame part, in which the spring member is so arranged, that it displaces the whole frame or a part thereof in the opposite direction to the actuated control element. Hereby the actuated control element may be connected with the frame or with the resilient member, or form a part of the frame. I 5 The reversing mechanism described is particularly remarkable for its simplicity and accurate operation and can be used for a great variety of purposes, such as forelectric switches, for looks, bolts, closing-means, '95

clutches, electro-magnet s, fire-arm's, taps, valves, control mechanism, brakes and the like; If the mechanism is to be used for example for electric switches, contacts may be fitted to one side of the frame, which contacts strike against the circuit contacts fitted on the walls of the housing.

I claim 1. In a reversing mechanism, the combination of two movable control elements, a spring member arranged between said control elements, said spring. memb'er adapted to move beyond itsdead position with one of said control elements and to thereby effect the movement of the other control element in the oppo site direction, one of said control elements being in the form of a frame in which said spring member is housed and means for moving the one of said control elements with said spring member.

2. In a reversing mechanism, the combination of two-movable control elements, a spring member arranged between said control elements adapted to be moved beyond its dead position with one of said control elements effecting the movement of the other control element in the opposite direction, one of said control'elements being in the form of a frame in which said spring member is housed, a stationary part enclosing said frame-shaped control element and means for moving said frame-shaped control element with said spring member in relation to said enclosing stationary element. p

3. In a reversing mechanism, the combination of two movable control elements, a spring member adapted to be moved beyond its'dead position with one of said control elements effecting the movement of the other control element in the opposite direction, said spring member being formed by a serpentine-shaped spring the centre coil of said spring rotatably connected with one of said movable control elements the outer coils of said spring rotatably connected with the other of said 8 movable control elements means for moving the one of said control elements with said spring member.

4; In a reversing mechanism, the combination of two movable control elements, a spring member adapted to be moved beyond its dead position with one of said control elements effecting the movement of the other control element in the opposite direction, one

of said control elements being in the form of a frame in which said spring member is housed, a's'crew head projecting from said frame-shaped element, and a knob loosely mounted on said frame shaped element having an internal spiral groove engaging with said screw head adapted to move said 'control element by turmngr In testimony whereof I aflix m signature.

RICHARD GA ZSGHE.. 

